Keystones — Cornerstone
Five GCSE retrieval questions · 23 August 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 51 + ? = 191
Answer: 140 -
2. Algebra
Collect like terms: 5x + 5y + 4x + 3y
Answer: 9x + 8y -
3. Geometry
Opposite = 17cm, adjacent = 11cm. Calculate the angle
Answer: 57.1° -
4. Ratio
Simplify: 4:4:8
Answer: 1:1:2 -
5. Statistics
Calculate the mean of: 41, 23, 7, 8, 13, 39, 31
Answer: 23.1